What is the main purpose of a pool skimmer?

The main purpose of a pool skimmer is to remove debris and contaminants from the water surface. Pool skimmers are designed to capture leaves, insects, dirt, and other floating materials before they sink to the bottom of the pool. By doing so, skimmers help maintain a clean and clear swimming environment, which is essential for both aesthetic reasons and for the overall health of the pool's water.

In addition to cleaning the surface, skimmers play a crucial role in the pool's circulation system. They draw water from the surface and direct it to the filtration system, where it can be cleaned and treated. This process not only removes visible debris but also helps reduce the risk of algae growth and other water quality issues.

While maintaining chemical balance and ensuring proper circulation are important for a pool’s health, these functions are not the primary role of the skimmer itself. Therefore, the correct answer highlights the skimmer's functionality as a key component in surface cleaning, making it vital for pool maintenance.